snowflake | network service for generating unique ID numbers | Runtime Evironment library

 by   twitter-archive Scala Version: snowflake-2010 License: No License

kandi X-RAY | snowflake Summary

kandi X-RAY | snowflake Summary

snowflake is a Scala library typically used in Server, Runtime Evironment, Nodejs applications. snowflake has no bugs, it has no vulnerabilities and it has medium support. You can download it from GitHub.

We have retired the initial release of Snowflake and working on open sourcing the next version based on Twitter-server, in a form that can run anywhere without requiring Twitter's own infrastructure services. The initial version, released in 2010, was based on Apache Thrift and it predated Finagle, our building block for RPC services at Twitter. The Snowflake we're using internally is a full rewrite and heavily relies on existing infrastructure at Twitter to run. We cannot commit to a date but we're doing our best to add necessary features to make Snowflake fit for many environments outside of Twitter. Source code is still in the repository and is reachable from snowflake-2010 tag. We won't be accepting pull requests or responding to issues for the retired release.

            kandi-support Support

              snowflake has a medium active ecosystem.
              It has 7373 star(s) with 1140 fork(s). There are 521 watchers for this library.
              It had no major release in the last 6 months.
              There are 2 open issues and 20 have been closed. On average issues are closed in 195 days. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of snowflake is snowflake-2010

            kandi-Quality Quality

              snowflake has no bugs reported.

            kandi-Security Security

              snowflake has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              snowflake does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              snowflake releases are not available. You will need to build from source code and install.

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            snowflake Key Features

            No Key Features are available at this moment for snowflake.

            snowflake Examples and Code Snippets

            No Code Snippets are available at this moment for snowflake.

            Community Discussions


            Assign default value to TIMESTAMP_NTZ snowflake
            Asked 2021-Jun-15 at 08:56

            I need to assign default value to column SERVERTIME with datatype TIMESTAMP_NTZ in snowflake. I have a below query:-



            Answered 2021-Jun-15 at 08:56

            Please make sure the data type is included and matched with the expression:



            Read committed isolation level and truncate table inside snowflake transaction
            Asked 2021-Jun-15 at 08:18

            Just a curious question in my mind and I thought of asking to Snowflake experts to clarify this question. We know that Snowflake default isolation level is read committed; I have one transaction let us A in which I am truncating data from Table T1 and Loading the Table T1 using transformed fresh data; at the same time I have another transaction say B is trying to read the data from Table T1 while getting this data truncated in transaction A; would I be able read the data from Table T1 in transaction B which it is still getting truncated in another transaction A.

            My mind says yes; transaction B should be able to read it from Table T1 because transaction A still in progress and not yet committed.



            Answered 2021-Jun-15 at 07:53

            Try running these 2 scripts in two different tabs with

            Script 1:



            SQL : How to determine if object in same location for >8 hours
            Asked 2021-Jun-14 at 23:03

            I want to know if an object has been in the same location for >8 hours. Any ideas how to derive that from this data sample? Thx

            ObjectID DateTime Lat Lon 23 5/2/2021 12:00 40.11 -30.34 23 5/2/2021 16:00 40.11 -30.34 23 5/2/2021 23:00 40.11 -30.34 24 5/2/2021 12:00 40.11 -30.34 24 5/2/2021 16:00 40.11 -30.34 24 5/2/2021 23:00 39.88 -29.00 25 5/2/2021 12:00 40.11 -30.34 25 5/2/2021 16:00 39.88 -29.00 25 5/2/2021 23:00 40.11 -30.34

            ObjectID 23 should be returned because it was in the same location >8 hours

            ObjectID 24 should not be returned. It may have been in the same location >8 hours, but based on our data we cannot be sure.

            ObjectID 24 should not be returned. The 12:00 & 23:00 locations are the same, but the object was somewhere else in between (16:00).

            Update: This is in Snowflake



            Answered 2021-Jun-14 at 23:03

            You can treat this as a gaps-and-islands problem and then aggregate to find the time where the lat/lon is the same:



            Snowflake DB Transfer to Postgres
            Asked 2021-Jun-14 at 19:29

            I'm trying to make a complete copy of a Snowflake DB into PostgreSQL DB (every table/view, every row). I don't know the best way to go about accomplishing this. I've tried using a package called pipelinewise , but I could not get the access needed to convert a snowflake view to a postgreSQL table (it needs a unique id). Long story short it just would not work for me.

            I've now moved on to using the snowflake-sqlalchemy package. So, I'm wondering what is the best way to just make a complete copy of the entire DB. Is it necessary to make a model for each table, because this is a big DB? I'm new to SQL alchemy in general, so I don't know exactly where to start. My guess is with reflections , but when I try the example below I'm not getting any results.



            Answered 2021-Jun-14 at 19:29

            Try this: I got it working on mine, but I have a few functions that I use for my sqlalchemy engine, so might not work as is:



            SQL: How can I count unique instances grouped by client ordered by date?
            Asked 2021-Jun-14 at 15:06

            I have the following table in a Snowflake data warehouse:

            Client_ID Appointment_Date Store_ID Client_1 1/1/2021 Store_1 Client_2 1/1/2021 Store_1 Client_1 2/1/2021 Store_2 Client_2 2/1/2021 Store_1 Client_1 3/1/2021 Store_1 Client_2 3/1/2021 Store_1

            I need to be able to count the number of unique Store_ID for each Client_ID in order of Appointment_Date. Something like following is my desired output:

            Customer_ID Appointment_Date Store_ID Count_Different_Stores Client_1 1/1/2021 Store_1 1 Client_2 1/1/2021 Store_1 1 Client_1 2/1/2021 Store_2 2 Client_2 2/1/2021 Store_1 1 Client_1 3/1/2021 Store_1 2 Client_2 3/1/2021 Store_1 1

            Where I would be actively counting the number of distinct stores a client visits over time. I've tried:



            Answered 2021-Jun-14 at 14:26

            If I understand correctly, you want a cumulative count(distinct) as a window function. Snowflake does not support that directly, but you can easily calculate it using row_number() and a cumulative sum:



            Connection pooling for external connections in Airflow
            Asked 2021-Jun-14 at 11:07

            I am trying to find a way for connection pool management for external connections created in Airflow.
            Airflow version : 2.1.0
            Python Version : 3.9.5
            Airflow DB : SQLite
            External connections created : MySQL and Snowflake

            I know there are properties in airflow.cfg file



            Answered 2021-Jun-14 at 10:48

            Airflow offers using Pools as a way to limit concurrency to an external service.

            You can create a Pool via the UI: Menu -> Admin -> Pools

            Or with CLI :



            Cannot read data - option() got an unexpected keyword argument 'sfUrl'
            Asked 2021-Jun-11 at 05:16

            I'm trying to read data from snowflake database table into databricks. Below is my code:



            Answered 2021-Jun-11 at 05:16

            Change sfUrl to sfURL and then test this operation.



            Python SQL - Inserting values into identifiable columns from List
            Asked 2021-Jun-11 at 04:45

            I have a list: reward_coupons, which is a list that can range in length from 1- 9 and contain reward IDs.

            I have a table (which I call from an identifier table name) which contains 9 columns named reward_id_01,reward_id_02...reward_id_09.

            In my reward_coupons list, customers can recieve 1 up to 9 rewards, so I would like to create a loop which inserts the values I have in my list(in order) to the table (identifier ($table_name))



            Answered 2021-Jun-11 at 04:45

            I have found the solution to to this problem.

            It seems that because "Column" is not a datatype you cannot pass a variable in using the following syntax:



            Substract 2 hours from datetime on Snowflake
            Asked 2021-Jun-10 at 21:16

            I am working on Snowflake, need to substract 2 hours from specifc date:

            date time: 2021-06-10 14:07:04.848 -0400

            '2021-06-10 14:07:04.848 -0400' - 2 hours

            expected result: 2021-06-10 12:07:04.848 -0400 (now it's twelve o'clock).

            Datediff didn't work:



            Answered 2021-Jun-10 at 21:16


            SQL - Snowflake - Inner Join not working as expected
            Asked 2021-Jun-09 at 18:06

            I have a table ADS in snowflake like so (data is being inserted each day), note there are duplicates entries on rows 3 and 4:

            ID REPORT_DATE CLICKS IMPRESSIONS 1 Jan 01 20 400 1 Jan 02 25 600 1 Jan 03 80 900 1 Jan 03 80 900 2 Jan 01 30 500 2 Jan 02 55 650 2 Jan 03 90 950

            I want to select all entries based on ID with the max REPORT_DATE - essentially I want to know the latest number of CLICKS and IMPRESSIONS for each ID:

            ID REPORT_DATE CLICKS IMPRESSIONS 1 Jan 03 80 900 2 Jan 03 90 950

            This query successfully gives me the max DATE for each ID:



            Answered 2021-Jun-09 at 18:06

            You could use QUALIFY and ROW_NUMBER():


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